CVE-2016-2391

Severity

21%

Complexity

39%

Confidentiality

48%

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.

CWE-476: NULL Pointer Dereference

CVSS 3.0 Base Score 5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 8 years ago

2016-06-16 18:59:00

Last updated 6 years ago

2018-12-01 11:29:00

Affected Software

QEMU

Canonical Ubuntu Linux 12.04 LTS

12.04

Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)

14.04

Canonical Ubuntu Linux 15.10

15.10

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

References

http://git.qemu.org/?p=qemu.git;a=commit;h=fa1298c2d623522eda7b4f1f721fcb935abb7360

Vendor Advisory

[oss-security] 20160216 CVE request Qemu: usb: multiple eof_timers in ohci leads to null pointer dereference

83263

USN-2974-1

https://bugzilla.redhat.com/show_bug.cgi?id=1304794

[debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update

[qemu-devel] 20160216 [Qemu-devel] [PATCH] usb: ohci avoid multiple eof timers